Endeavour Energy Electrical Safety Rules. October 2014

Transcription

1 Endeavour Energy Electrical Safety Rules October 2014

2 Endeavour Energy Electrical Safety Rules Associated Procedures List Document No. GAM 0089 GSY 0054 GSY 1004 GSY 1088 WSY 0037 GNV 1044 GNV 1051 GNV 1055 GNV 1058 GNV 1068 GNV 1070 GNV 1086 Title Authorisations Governance and Management Approval to work Isolation and danger tagging Access authority for high voltage work and/or test Polarity testing and phasing of low voltage mains, services and apparatus Commissioning of electrical apparatus which has never been commissioned or which has been worked on Working on structures with communications transmitters Use of low voltage (LV) protective bonds on LV distribution mains Fallen Conductors Application of yellow taped areas in zone and transmission substations Access Authority procedure for work on transmission mains and joint use mains Switching Folder Electrical Safety Rules October 2014

3 Amendment Summary for October 2014 Issue Amend Rule Page Change No: Number 14/10-01 Various Various employee replaced by worker ; definition of worker added. 14/10-02 Definitions 4 Definition of disconnected apparatus amended. 14/ Requirements for operation of plant amended. 14/ Requirements for excavation near cables added. 14/ Content deleted. 14/ Amended to clarify preference for isolation. 14/ Various Amended with relevant content from GSY / Added requirement to wear LV insulating gloves when operating Distribution Air Break Switches and metal-clad switchgear. 14/ Requirements for temporary LV insulation amended. 14/ Requirements for work in stations amended. Added requirement to read notices at entrance to station prior to entry. Relocated material from 8.7 to Amended with relevant content from GNV / Amended requirements for work on earthing systems 14/ Amended requirements for work on neutral systems 14/ Amended requirements for work on disconnected apparatus 14/ Content relocated to / Amended guidance for managing hazards of induced voltages and transferred earth potentials 14/ Amended to clarify application for disconnected apparatus 14/ Amended with relevant content from GSY / Amended with relevant content from GSY / Amended to clarify application for disconnected apparatus 14/ Requirement for authorised switching officer added. Added requirements for work effecting isolation points. Added requirement to use equipotential mat when operating Transmission overhead switches. Added PPE requirements for operation of non-metal clad switchgear. Amended with relevant content from GNV / Amended with relevant content from GNV / Amended with relevant content from GNV Requirement added for three-phase switching when using temporary driven earth on feeder without SEF. Amended isolation and earthing requirements for spur lines. 14/ Amended to clarify minor work allowed under AAT. 14/ Clarified application of AAT for disconnected apparatus. Amended to clarify application of AAT for HV DC testing. 14/ Replaced access authority earths with operational earths. 14/ Amended with requirements for operational earths. 14/ Amended with relevant content from GNV 1053 and GNV / MAD table designated as Table D and amended. 14/ Requirements added for coordinating AA and HV Live Work on the same work site. Electrical Safety Rules October 2014

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5 CONTENTS 1.0 PURPOSE SCOPE Exceptional work Ability to declare rules REFERENCES DEFINITIONS NOT USED GENERAL Training and qualifications Employer responsibility Worker responsibility Reporting of electrical incidents/accidents Reporting hazardous electrical situations Safe approach distances Safe approach distances for Authorised Persons and Instructed Persons Safe approach distances for ordinary persons Safe approach distances for persons operating cranes and hoists in close proximity to electrical apparatus Safe approach distances for scaffolding in close proximity to electrical apparatus Safe approach distances for excavation near underground cables Deleted Communication Emergency conditions Fallen conductors Making safe fallen low voltage conductors Making safe fallen high voltage conductors Safety equipment Duty of personnel regarding safety equipment Clothing Helmets Harnesses Low voltage insulating gloves Eye protection Low voltage detectors Electrical Safety Rules October 2014 Page i

6 6.9.8 Low voltage indicating devices (volt sticks) Ladders Portable pole platforms Tool Bags Temporary low voltage covers and insulating material Screens/barriers Rescue kits First aid kits Controlled descent device Operating equipment and live line working equipment Height measuring rods Water spray equipment Insulated low voltage tools Portable electrical equipment Warning signs Conductive materials Working on or accessing poles or structures Identification of electrical apparatus Tags Danger tags Warning tags Area marking tapes Yellow Tape Barriers Approval to work (ATW) General working procedures in electrical stations Entry into electrical stations Securing of entrances Checking of entrances and exits Additional requirements for indoor, basement and underground electrical stations Duties of persons on entry into electrical stations Operating work in electrical stations Accidentally tripped circuit breaker Hazardous low voltage and mechanical apparatus isolations Earthing of electrical apparatus in electrical stations Work in electrical stations Operation of plant in electrical stations Rescue and resuscitation notices and emergency response information Fire protection systems Access to high voltage cages or rooms Work in battery rooms Page ii Endeavour Energy

7 Duties of persons prior to leaving the station Earthing systems Neutral systems Work on new (yet-to-be connected) or disconnected apparatus Work on de-energised lines above in-service lines Deleted (content moved to 6.35) Testing Responsibility for authorisation to energise Phasing Indirect phasing Current transformer circuits Working on poles carrying live electrical apparatus Hazards from induced voltages and transferred earth potentials Lightning Induced voltages Voltage gradients Transferred voltages on neutral and earthing systems Deleted (content moved to 6.4) Work on live high voltage overhead lines Distractions when working on live electrical apparatus or in high risk situations Communications antenna on towers, poles or columns WORK ON LOW VOLTAGE ELECTRICAL APPARATUS Low voltage safety principles Basic safety principle Work on or near de-energised low voltage electrical apparatus Proving low voltage electrical apparatus de-energised Energising and de-energising low voltage electrical apparatus Work on low voltage complex structures Work on live low voltage electrical apparatus Working unattended on live low voltage electrical apparatus Effectiveness of insulation on low voltage electrical apparatus Street lighting conductors and control circuits Paralleling of low voltage distributors via bonding, switching or fuse insertion Low voltage customers' service connection and identification of service neutral Work on low voltage control panels or switchboards Work on low voltage overhead lines General principles Work on or near live low voltage overhead conductors Electrical Safety Rules October 2014 Page iii

8 7.3.3 Persons working together Working with assistance Working without an assistant Working in Earthed Situations Passing Between Live Low Voltage Conductors Work around pilot cables with exposed catenary Work on low voltage underground cables Identification of low voltage underground cables Work on de-energised low voltage cables Work on energised low voltage cables WORK ON OR NEAR HIGH VOLTAGE ELECTRICAL APPARATUS High voltage safety principles Basic safety principle Work on, or near, de-energised high voltage electrical apparatus Isolation of high voltage electrical apparatus for work or test Securing of isolations Proving high voltage electrical apparatus de-energised Earthing and short-circuiting Access Authorities Switching folder Access authority for work Access Authority for Test Work on control and protection equipment Replacement of high voltage fuses in switchgear Work on high voltage overhead lines Work on high voltage underground cables Precautions for working on high voltage underground cables Work which may be carried out with high voltage cables in service Work which may not be carried out with high voltage cables in service Isolation of high voltage underground cables Earthing and short circuiting of high voltage underground cables Identification of high voltage underground cables Other cables laid adjacent to power cables Proving high voltage cables de-energised by spiking Work on high voltage de-energised cables without spiking Work on pilot cables Deleted (content moved to 6.23) Work on electrical apparatus not owned by Endeavour Energy HIGH VOLTAGE LIVE WORK Scope Page iv Endeavour Energy

9 9.2 Safety General Identification of the worksite Communication HVLW Permit Live Line Manual Training and Authorisation Minimum Approach Distances Suspension of work Safety Observers Live Work Permit Coordination of HV Live Work and Access Authority Work on the same worksite De-energised work HVLW Equipment Temporary Insulation Switching and Protection Requirements Mobile Plant HVLW Mechanical Tension and Loading Calculations Electrical Safety Rules October 2014 Page v

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11 1.0 PURPOSE To provide minimum safe work practices for persons, when working or testing on or near electrical apparatus associated with the distribution of electricity. The Endeavour Energy Electrical Safety Rules define the accepted safe methods for working on or near Company electrical assets and are the minimum accepted standard. Work practices which exceed the minimum standard may be accepted following appropriate review and approval. These Rules form a part of the Endeavour Energy Electricity Network Safety Management System (ENSMS) produced to meet the requirements of the Electricity Supply (Safety and Network Management) Regulation 2014 (or as amended). 2.0 SCOPE The safety measures prescribed in these Rules are to be observed at all times by Endeavour Energy employees, contractors, and Authorised Persons working for Accredited Service Providers, working or testing on or near electrical apparatus or assisting with work or test on or near electrical apparatus, which includes: work or test carried out on or near high voltage electrical apparatus; work or test carried out on or near low voltage electrical apparatus, owned or leased by Endeavour Energy for supply of electricity to the public or for the provision of a service to the public; work or test carried out on or near any electrical apparatus, in electrical stations containing high voltage electrical apparatus or in generating stations; and Work or test carried out on station battery banks. Note: The use of approved procedures, work method statements or workplace instructions which meet or exceed the requirements of these Rules is accepted. 2.1 Exceptional work Approval for exceptional work may be given by the Chief Engineer where a change request has been completed, all safety issues considered and assessed and control measures implemented and completed. For any such approval to be given it must be proved that existing rules and procedures will prevent the work from being done. An application for approval of exceptional work must be supported by a plan of work, a description of the process to be adopted, a risk analysis, steps to be taken to advise all persons involved of the actions to be implemented and any emergency control measures to be applied. Applications must be in writing. Approval or refusal of the application will also be in writing. Electrical Safety Rules October 2014 Page 1 of 65

12 2.2 Ability to declare rules The electrically qualified Chief Operating Officer, upon his signature can declare a rule with immediate effect. Should the Chief Operating Officer not be electrically qualified, the Chief Engineer will have the authority to declare a rule with immediate effect. Subsequent to the proclamation, a copy of the document must be submitted to the Electrical Safety Rules Committee for assessment for permanent changes to the Electrical Safety Rules. 3.0 REFERENCES Board Policy 3.0 Health & Safety Board Policy Network Electrical Safety Company Procedure (Network Asset Management) GAM 0046 Amendment, Distribution and Communication of Electrical Safety Rules Company Procedure (Health & Safety) GSY 0051 Health & Safety Incident Management Company Procedure (Health & Safety) GSY 0072 Working at Heights Company Procedure (Health & Safety) GSY 1015 Excavation Company Procedure (Health & Safety) GSY 1031 Electrical Safety Rules Company Procedure (Health & Safety) GSY 1066 Worksite Hazard and Risk Assessment Division Procedure (Network) GNV High Voltage Live Work Safety Endeavour Energy Electricity Network Safety Management System (ENSMS) (as amended) AS Portable Fire Extinguishers and Fire Blankets National Electricity Network Safety Code, ENA NENS 01 National Electricity Network Safety Code ENA NENS 09 Selection, Use and Maintenance of Personal Protective Equipment for Electrical Hazards Electricity Supply (Safety and Network Management) Regulation 2014 Work Health and Safety Act 2011 (NSW) Work Health and Safety Regulation 2011 (NSW) 4.0 DEFINITIONS Shall - indicates a statement is mandatory Should - indicates a recommendation May - indicates the existence of an option For the purpose of these Rules: Access Authority for work or test A pre-printed form which, when issued in accordance with a documented procedure adopted by the employer, gives permission to the holder and work party to work on or near, or test, electrical apparatus. Usually associated with HV and related apparatus, it shall: define the electrical apparatus on or near which work or test may be carried out; describe the nature of the work to be carried out; and define the safe area for work. Page 2 of 65 Endeavour Energy

13 Accredited service provider (ASP) An individual or entity accredited in accordance with the Electricity Supply (Safety and Network Management) Regulation 2014 (or as amended). Note: an accredited service provider can be an individual, partnership, or company. (Note: in addition to accreditation issued by the Regulator, an ASP must hold authorisation from Endeavour Energy for work on or near our network.) Apparatus An item or combination of items of plant or equipment. Approved Having appropriate employer endorsement in writing for a specific function. Approval to work (ATW) A pre-printed form which, when issued in accordance with a documented procedure adopted by the employer, gives permission to the holder and work party to work on or near, or test, electrical apparatus (usually associated with LV only isolations) where an Access Authority is not required. Attended/close at hand A worker, competent to carry out the appropriate rescue and resuscitation is located such that no delay in carrying out a required rescue will occur. Specifically the rescuer must be at the work site where the rescue would be required. Authorised person A person with technical knowledge or sufficient experience who has been approved, or who has the delegated authority to act on behalf of Endeavour Energy, to perform the duty concerned. Authorised switching officer An employee of Endeavour Energy, authorised in writing for operation of the high voltage network within the limitations specified on their authority card. Authority to energise All procedures for the cancellation of Access Authorities, laid down in these Safety Rules, have been carried out and that electrical apparatus may be energised safely. Barrier (see Screens) Cable An insulated conductor or two or more such conductors, laid together, either with or without fillings, reinforcement or protective coverings. Competent person A person having the skills, knowledge and attributes needed to complete a task. Conductor A wire, cable or form of metal designed for carrying electric current. Electrical Safety Rules October 2014 Page 3 of 65

14 Crane A crane or hoist of a mobile or crawler type, or an elevating work platform or part thereof, and includes the gear ancillary to the use of the crane. Customer installation An Electrical Installation owned by a network customer, that may be isolated from the network by removing service fuses, opening main switch(es) or disconnecting service mains. Danger tag An approved tag, which when affixed in accordance with approved procedures to a device gives warning against any operation of that device. De-energised Not connected to a source of electrical supply but not necessarily isolated. Disconnected apparatus (completely disconnected) Electrical apparatus which cannot be energised by operating work because of the absence of electrical connections to any source of electrical supply. Specifically, to be disconnected apparatus, electrical apparatus must be able to be visually confirmed at any time as being separated from all sources of electrical supply: (a) in excess of the specified minimum safe approach distance for authorised persons and be secured to prevent the mains, cables or apparatus coming closer than that distance; or (b) by a secured barrier or screen. Additionally, Network Mains must be earthed and short circuited by approved means at all points of disconnection. Note that for the purposes of this definition secured means by use of permanent line, connection, or other hardware, requiring a tool to install and remove. Disconnection and Reconnection Instruction (D&R) A written sequence of actions to operate equipment on the high voltage system. (It may include low voltage switching in association with these actions.) Earthed Electrically connected to the general mass of the earth. Electrical apparatus (electricity works) Any electricity power lines or associated equipment or electricity structures that form part of a transmission or distribution system. Electrical station Any enclosed substation or switching station, whether of the indoor, outdoor or underground type. Employee A worker in the employment of the employer (whether under a contract of employment or apprenticeship) and includes a contractor and a person employed by a contractor, who carries out work for the employer. Page 4 of 65 Endeavour Energy

15 Employer In the case of Endeavour Energy employees and contractors (and their sub contractors) directly engaged by Endeavour Energy, Endeavour Energy is the employer. For Authorised Persons engaged by an Accredited Service Provider to perform work, the Accredited Service Provider is the employer. Energised Connected to a source of electrical supply. Excavation Work involving the penetration of the ground or surface of the earth including cutting or caisson, chasing, boring, piering or the digging of trenches, ditches, shafts, wells, tunnels, drifts and rises below the finished levels of the ground surface or finished ground levels. This also includes works involving the movement or placement of soil or other surface materials by removing, boring or forcing objects into the ground or the surface of the earth. Exposed conductor An electrical conductor, approach to which is not prevented by a barrier of rigid material or by insulation which is adequate under a relevant Australian Standard specification for the voltage concerned and which is in sound condition. Extra low voltage Voltage normally not exceeding 50 volts alternating current (a.c) or 120 volts direct current (d.c). Generating station Any building or enclosure where electrical energy is able to be generated at high voltage, or at low voltage where the output is transformed to high voltage. Hazard/risk assessment The assessment performed by which work processes and locations are assessed to determine the presence of hazards and indicates the appropriate method to safely manage the risk. Hazardous low voltage or mechanical apparatus: All hazardous low voltage, mechanical, pneumatic, hydraulic or gas filled equipment associated with high voltage electrical apparatus, which may present a danger to persons in certain work situations. It may also refer to low voltage electrical apparatus for the supply of electricity to the public, such as low voltage overhead line or underground cables forming part of the low voltage distribution system and includes alternating current and direct current control and power systems for circuit breakers, transformers, etc. These may be referred to in the Special Conditions section of Access Authorities as local safety precautions. High voltage A voltage normally exceeding 1,000 volts alternating (a.c) or 1,500 volts direct current (d.c). High voltage cage or room A fully fenced or walled area, room or compartment identified by a notice, containing exposed high voltage conductors which do not maintain standard safety clearances. High voltage cages or rooms may be located within high voltage switchyards or elsewhere. Entry to High Voltage Cages or rooms is only permitted under Access Authority. (Note: Entry for operating work by appropriately authorised persons is permitted provided that safe approach distances can be maintained.) Electrical Safety Rules October 2014 Page 5 of 65

16 Instructed person A person adequately advised by an Authorised Person or who has sufficient training and experience in the safety requirements for the work being undertaken to enable them to avoid the dangers which electricity may create. Insulated Separated from all other possible conductors by a rated value of non-conductive material, as in a covering or barrier, or by sufficient gap in air to prevent flashover or short circuit. Isolated (or isolate) Disconnected from all possible sources of electrical energy by opening switches, withdrawing circuit breakers, removing fuses, opening links, opening connections, tying back bonds and rendering them incapable of being made live unintentionally by the application of danger tags (and locks where possible). Live Connected to a source of electrical supply or subject to hazardous induced or capacitive voltages. Live line indicating devices Includes any testing equipment, such as live line testers, used for proving high voltage electrical apparatus live or de-energised. Live line work The application of approved techniques by trained, qualified and authorised persons on live high voltage electrical apparatus. It includes all work performed on the components of a line energised at, or capable being energised to high voltage due to isolation, earthing and short circuiting and the issuing of an Access Authority not being carried out. Low voltage A voltage normally exceeding 50 volts alternating current (a.c) or 120 volts direct current (d.c), but not normally exceeding 1,000 volts alternating (a.c) or 1,500 volts direct current (d.c). LV auto isolation Control system at a source of LV supply, designed to automatically isolate and remain isolated whilst the Network element to which it is connected is de-energised. (Customer installed Low Voltage generation systems with active anti-islanding protection in accordance with Australian Standards are deemed to achieve LV Auto Isolation.) LV protective bonds Approved bonds which short circuit all phase and neutral conductors when required under these Rules. Mains (Network Mains) Conductors, including cables and earthing conductors, owned or leased by Endeavour Energy and forming part of the network, but not including control, protection, communications, or other secondary system conductors. Megger To carry out an insulation test, or continuity test on electrical apparatus using an insulation tester. (Note: Megger is a commonly used term which is also a commercial brand name.) Page 6 of 65 Endeavour Energy

17 Mobile plant cranes, elevating work platforms, tip trucks or similar plant, any equipment fitted with a jig or boom and any device capable of raising or lowering a load. Near (on or near) A situation where there is a reasonable possibility of a person, either directly or through any conducting medium, coming within the relevant safe approach distances specified in these Rules in Table A. Network All of the electrical apparatus used in the supply of electricity. The terminology adopted to describe the various elements of the network includes: Transmission Network - All electrical apparatus operating at nominal voltages of 33,000 volts a.c and above. High Voltage Distribution Network - All electrical apparatus operating at nominal voltages above 1,000 volts a.c and less than 33,000 volts a.c. Low Voltage Distribution Network - All electrical apparatus operating at nominal voltages between extra low voltage and 1,000 volts a.c. Network operator For the purpose of these Rules and the network to which they apply, Endeavour Energy is the network operator. Neutral conductor The conductor of a low voltage system which is earthed at its origin. New or Disconnected Apparatus form (NODA) A form which, when issued in accordance with a documented procedure approved by the Network operator, gives permission to workers to work on or near, or test, disconnected apparatus where an Access Authority or Approval to Work is not required. Observer Is a worker whose sole duty is to observe the work that is in progress and to ensure that work is carried out in accordance with approved procedures and these Rules. Operational earths Earthing and short circuiting equipment applied to electrical apparatus to satisfy the requirements for the issuing of an Access Authority, as distinct from working earths. Operational earths may only be applied or removed, with the approval of the System Operator. Operating Agreement A written agreement on which an undertaking is given by an authorised person for a network operator or other organisation, that the electrical apparatus specified will remain isolated and/or earthed until the written agreement has been cancelled. The document is used in cases where the Network Operator or organisation concerned is undertaking switching operations for the other party. (An Operating Agreement is not an Access Authority.) Operating work Work involving the operation of switches, the opening or closing of links or other connections intended for ready removal, the removal or replacement of fuses, proving that electrical apparatus is de-energised and the earthing and short-circuiting of electrical apparatus. Electrical Safety Rules October 2014 Page 7 of 65

18 Ordinary person A person without sufficient training or experience to enable them to avoid the dangers which electrical apparatus may create. Overhead line An aerial conductor together with insulators, hardware, cross arms or other associated electrical equipment erected or in the course of erection out of doors for the purpose of supplying electricity. It does not include any pole or support located within a fence surrounding an electrical station. Personal issue Means the issue of an Access Authority where there must be direct instruction by the Issuer to the Holder during the issuing process. Phasing/phased A test to determine whether energised conductors may be satisfactorily connected together. Qualified A worker who is trained and competent to use appropriate skills to complete a given task. (Electrically qualified means: a worker who is trained and competent in an electrical trade or profession such as a linesman, electrical fitter/mechanic, cable jointer, electrical engineer or engineering officer, system electrician, distribution powerline or other electrically qualified person.) Screens (screened) A barrier of either insulating material or conductive material fitted with an earthing bond suitable for connection to earth medium. Spiking Driving a metal spike into a screened cable ensuring that at least one core of the cable is connected to the metal sheath or screen using approved cable spiking equipment. SWER The single wire earth return system. Switching folder A printed envelope which documents all Access Authorities for Work or Test, Operating Agreements or Approval to Work forms issued and cancelled and associated conditions for the associated work site including the connection of earthing apparatus. Access Authorities, hazard assessments and all switching instructions shall be stored in the folder. All associated paperwork shall be returned to the folder and the folder returned for filing. Switching station/switch yard Any premises or structure containing or carrying electrical apparatus, but does not include any structure carrying only one switch and/or fuse unit (such as an air break switch). System Operator The authorised person responsible for the operation of all or a designated part of the electrical network. Page 8 of 65 Endeavour Energy

19 Totally enclosed electrical apparatus Electrical apparatus in which the conductors are totally enclosed within it and which can only be exposed by unbolting or unlocking covers or shutters which prevent normal access. High voltage insulated cables with metallic earthed screens shall be regarded as totally enclosed apparatus. Vehicle A truck (non-tipping), car utility or other general purpose conveyance used for the carriage of persons or goods. Voltage Potential difference between conductors and between conductors and earth. Warning tag A tag affixed to apparatus giving a warning against the operation of the apparatus due to defect, change of normal condition or operation, or unusual situation. Work area/site A location at which work is to be performed. Under Access Authority conditions the Access Authority defines the work site. Where live line work is within a work site, it takes precedent over all other work. Worker A person is a worker if the person carries out work in any capacity for a person conducting a business or undertaking, including work as: (a) an employee; or (b) a contractor or subcontractor; or (c) an employee of a contractor or subcontractor; or (d) an employee of a labour hire company who has been assigned to work in the person s business or undertaking; or (e) an outworker, ie, a person who performs work for an employer at their own home or at another location that is separate from their employer's factory, workshop, office or worksite; or (f) an apprentice or trainee; or (g) a student gaining work experience; or (h) a volunteer. Working earths Earthing and short circuiting equipment erected, in addition to operational earths, to fulfil the requirements of these Rules. Electrical Safety Rules October 2014 Page 9 of 65

20 5.0 NOT USED Reserved for future use. 6.0 GENERAL Basic Safety Principles ALL ELECTRICAL APPARATUS SHALL BE REGARDED AS LIVE UNTIL PROVED DE-ENERGISED. Contact with live electrical apparatus will cause severe injury or death. In all cases of electric shock or suspected electric shock the victim shall immediately be transported to hospital or medical centre for treatment. All cases of electric shock or suspected electric shock shall be reported as required by Company Procedure (Health & Safety) GSY 0051 Health and Safety Incident Management. Hazard and risk assessments shall be carried out for all types of work performed under these Rules. 6.1 Training and qualifications Employer responsibility The employer shall ensure that appropriate training courses and assessments have been undertaken for the respective workers so that they can carry out the required tasks safely and competently Worker responsibility A worker shall not carry out work on or near the network unless the worker has been authorised to carry out the specified function. Authorisation requires that the worker: has received training which is appropriate for the type of work concerned; and is capable to safely perform the work required to be undertaken; and has demonstrated competency of the relevant work procedures and safety instructions; and has, during the previous 12 months, received appropriate instruction in the following procedures that are relevant to the nature of the work: - resuscitation; - releasing a person from live electrical apparatus; - rescuing a person from a pole, structure or elevating work platform; and - rescuing a person from a confined space. All persons required to work in construction areas must hold a WorkCover General Induction for Construction Work in NSW card. Visitors to construction areas shall be inducted into the site and supervised. Page 10 of 65 Endeavour Energy

21 6.2 Reporting of electrical incidents/accidents All electrical incidents and accidents shall be reported as required by Company Procedure (Health & Safety) GSY 0051 Health and Safety Incident Management. 6.3 Reporting hazardous electrical situations All hazardous electrical situations shall be guarded until made safe and shall be reported as soon as possible to the System Operator. Any person observing someone committing a breach of these Rules shall warn them of the hazard involved and then report the matter to the person s supervisor or their own manager or supervisor. 6.4 Safe approach distances Safe approach distances for Authorised Persons and Instructed Persons Persons shall not allow any portion of their bodies or any object which they are in contact with (except when using approved equipment for testing, operating or working on live electrical apparatus) to come within the safe approach distances of live exposed electrical apparatus shown in Table A. Table A Safe Approach Distances for Authorised Persons and Instructed Persons Nominal Voltage (a.c volts) Safe Approach Distance (mm) Authorised Person Up to and including 1, Above 1,000 up to and including 22, Above 22,000 up to and including 66, Above 66,000 up to and including 132, Above 132,000 up to and including 220, Above 220,000 up to and including 330, Above 330, Safe approach distances for ordinary persons Instructed Person Ordinary persons shall maintain the safe approach distances given below in Table B. Table B Safe Approach Distances for Ordinary Persons Nominal Voltage (a.c volts) Up to and including 132,000 Above 132,000 up to and including 330,000 Above 330,000 Minimum safe approach distance 3.0 metres 6.0 metres 8.0 metres Electrical Safety Rules October 2014 Page 11 of 65

22 6.4.3 Safe approach distances for persons operating cranes and hoists in close proximity to electrical apparatus The operation of cranes and hoists in the proximity of live overhead lines (which includes elevating work platforms) is governed by the WHS Act 2011, the WHS Regulation 2011 and associated Codes of Practice. When loading or unloading equipment using a crane or hoist, great care shall be taken to ensure that no part of it, or its load, comes within the safe approach distance relevant to the voltage concerned. The safe approach distance for plant operated by workers who have not been authorised is given in Table B above. For plant operated by authorised persons, safe approach distances given in Table A above can apply. The authorised operator is responsible for ensuring there is a safety observer in place at all times during plant operation within the approach distance provided in Table B. The safety observer shall: be authorised to observe plant operating near overhead electrical apparatus; and only have the duty to observe the operation of the plant; and only observe one item of plant at any one time. The safety observer working with an EWP must be familiar with the emergency procedures for the EWP they are observing. Under emergency conditions, the safety observer may operate the plant for the purpose of rescue without another observer being required. Workers shall not be in contact with any part of the plant and the ground or earthed situation during the period the plant is being operated within the safe approach distance given in Table B above. The authorised operator may operate the controls of the plant while standing on the ground or while in contact with an earthed situation only if one or more of the following provisions are complied with: the controls are effectively insulated for the nominal voltage of the conductors near the plant; for plant operating near low voltage apparatus only, the operator wears low voltage insulating gloves and approved leather outer gloves on each hand; the operator stands on an equipotential metallic mat which is electrically connected to all metalwork associated with the controls; or radio or similar controls with no physical connection to the plant are being utilised and the operator is located further from the plant than the distances specified in Table A above. Note that any plant, including the controls, or any load carried or moved by the plant, or any tools, may be considered to be insulated only if they comply with the insulation requirements of a relevant Australian Standard, is appropriately labelled, and the test certificate is in date. The insulated portions of the plant shall be clearly identified by appropriate markings and/or labels. The plant must bear the notices depicted in the WorkCover Code of Practice for Work Near Overhead Power Lines which must be visible to the operator at each set of controls Safe approach distances for scaffolding in close proximity to electrical apparatus When metal scaffolding or other portable metal structures are being erected, moved or used in electrical stations or elsewhere, the provisions of the AS 4576, 1995 and the Guide to Scaffolders, shall be observed at all times. This requires a minimum clearance of four metres to Page 12 of 65 Endeavour Energy

23 be maintained, unless the electrical apparatus being worked on has been isolated, earthed and short-circuited, and an Access Authority has been issued. Scaffolding that is closer than four (4) metres to any exposed live electrical apparatus in an electrical station shall be earthed by a trailing earth, capable of carrying the maximum prospective fault current, to the electrical station earth grid Safe approach distances for excavation near underground cables Prior to commencing any excavation work, a search shall be conducted to identify and locate any underground cables that may be in the vicinity of the excavation. For planned work, this includes contacting the Dial Before You Dig service (phone 1100, or and reviewing network asset information where available. Underground cables in the work area shall be exposed by hand or other approved nondestructive excavation techniques to confirm their position. For an unauthorised excavator operator, powered excavation shall not be carried out closer than 600mm to underground cables. This distance can be reduced to 300mm if it is known that only low voltage cables are in the area, such as underground service cables. Powered excavation may be used to expose the hard cover or to 150mm above the cable if: the machine operator is authorised to excavate near the network; and they operate under the constant direction of a person authorised to observe excavation work. The cable can be exposed for the length of the excavation by manually removing the hardcover and additional soil or sand. Once exposed, mechanical excavation may then be carried out to 75mm beside the cable by an authorised operator under the constant direction of an authorised observer. If a cable is known or suspected to have been damaged during excavation, it shall be: regarded as live; and guarded from a safe approach distance of eight (8) metres by a responsible person once found; and remain guarded (unless extreme circumstances exist) until made safe or repaired in accordance with these Rules. 6.5 Deleted 6.6 Communication Persons communicating with a System Operator via a radio or telephone shall identify themselves and should state the place from where they are speaking. The person transmitting the message is responsible for ensuring it is received correctly. Operating messages shall be repeated by the receiver to the sender for confirmation. Facilities for emergency communications shall be available at all work sites. All workers normally on site shall be aware of and be instructed in the correct use of these facilities. Electrical Safety Rules October 2014 Page 13 of 65

24 6.7 Emergency conditions During an emergency the System Operator may request any competent person to carry out work that may, in the opinion of the System Operator, be necessary to make the network safe. Under emergency conditions, to save life or protect property: switching may be carried out by any competent person; and the System Operator shall be notified as soon as possible after such emergency operations; and the switch shall not be operated again without the System Operator's approval. Note: Where risk to human life exists high voltage electrical apparatus shall be isolated, earthed and short circuited as required by these Rules. Rescue may then be carried out without the issue of an Access Authority under the immediate supervision or direction of the isolating officer. 6.8 Fallen conductors All fallen conductors shall be: regarded as live; and guarded from a safe approach distance of eight (8) metres by a responsible person once found; and remain guarded (unless extreme circumstances exist) until made safe or repaired in accordance with these Rules. There may be high or low voltage conductors down or both and these may be intermixed. Precautions shall be taken to manage any risks from step and touch potentials. The fallen conductors shall be identified by an authorised person. Further requirements for managing fallen conductors can be found in Division Procedure (Network) GNV Fallen Conductors Making safe fallen low voltage conductors Fallen low voltage conductors shall be made safe by being isolated and danger tagged at all points of network supply, or being made disconnected apparatus. Alternatively, where the integrity of the insulation has been assessed and it has been confirmed that it is safe to do so, insulated or covered service mains may be rolled up and secured at least 3.5m high so as to be out of reach of the public in accordance with GNV 1058 Fallen Conductors. If there is any doubt about the insulation integrity, the fallen low voltage conductors shall be isolated or disconnected. Live working techniques shall be used when work is not being carried out under ATW conditions in accordance with of these rules. A Warning Tag shall be applied to the adjacent structures advising of the actions taken. The dispatcher shall be advised of all action taken. When proving low voltage fallen conductors de-energised using a contact tester, a temporary earth stake shall be used, driven into the ground at least 1.5 m away from any fallen conductors. Page 14 of 65 Endeavour Energy

25 6.8.2 Making safe fallen high voltage conductors Fallen high voltage conductors shall be managed as follows: treat the fallen conductors as live; and under instructions from the System Operator, isolate and Danger Tag the points of isolation; and prove de-energised by approved means; and earth and short circuit in accordance with approved procedures, on a structure as close as practical to the fallen conductors, with the connection to the conductors at least 3.5m high so as to be out of reach of the public. Alternatively, following proving de-energised, the fallen conductors may be made safe using live line cutters by an authorised person in accordance with approved procedures. An Access Authority shall be issued before any work is carried out on the fallen conductors, including relocation, in accordance with these rules. The System Operator shall be advised of all action taken. 6.9 Safety equipment Duty of personnel regarding safety equipment It is the duty of every person working on or near electrical apparatus: to use only safety equipment approved by the employer; and to use in a proper manner the safety equipment provided for its intended purpose; and to satisfy themselves that safety equipment is in good condition and working order prior to use; and to maintain and care for safety equipment. Before use, all safety equipment shall be examined by the worker. If found to be defective, damaged or beyond the required test dates: it shall not be used; and it shall be identified as defective with a Warning Tag; and the worker's supervisor shall be informed, as soon as practicable, so that a replacement for such equipment can be arranged Clothing This clause is specific to electrical PPE clothing requirements for work covered under the rules and is exclusive of any additional general safety PPE requirements. The minimum PPE clothing worn shall: cover the body from neck to wrist to ankle. Shirt, coat or jacket, and/or overalls shall be fastened at both wrist and neck area; have properties not inferior to 185gsm cotton drill be worn such that shirts must be tucked into trousers and sleeves must be rolled down and fastened to protect against entanglement and arc flash injury; have non-metallic fasteners or have fasteners protected by a layer of the same material as that of the garment on both the top and undersides; and be maintained in accordance with the manufacturer s instruction. Additionally, approved safety footwear shall be in good condition and worn for all work on or near electrical apparatus. Electrical Safety Rules October 2014 Page 15 of 65

26 When applied to clothing, retroreflective material shall be non-conductive and consideration shall also be given to using retroreflective materials with flame retardant properties. Wet weather clothing and cold weather clothing worn when working on or near the network should comply with the requirements above. Where it does not comply, it shall be worn over at least one layer of clothing described above. For Endeavour Energy employees, clothing obtained from the store is approved for use under these Rules. People visiting site performing administrative or observation-type activities where there is no reasonable possibility of coming on or near live electrical apparatus are excluded from this requirement however are required to wear long sleeved shirt, long trousers and flat, enclosed footwear. Employer provided clothing shall be worn at all times for the purpose for which it is issued. The wearing or carrying of personal metal effects such as keys, metal banded watches, bracelets, metal belts, clothing with metal thread woven into it, metal zips, cigarette cases, small pocket tools, ear rings, body piercing, necklaces, rings, mobile phones, etc., constitute a danger when working on or near live electrical apparatus. Such effects shall be removed from the person to minimise the risk of injury. A particular danger is metal objects falling from pockets. All clothing and materials are to be regarded as conductive unless there is definite knowledge to the contrary. Long hair must be secured against becoming caught in machinery or equipment. Clothing and safety footwear shall be in good order and repair. Clothing shall have no holes, missing or broken buttons, fasteners or zips. Shirts shall be tucked in, to limit the possibility of entrapment or snaring. Although not specifically electrical, the wearing of rings, watches, bracelets, ear rings, body piercing and chains etc, is a significant risk when working with machinery and tools. These items shall not be worn where there is a risk from the operation of machinery or tools Helmets Only approved helmets shall be used. Before use, helmets shall be inspected for any signs of deterioration. Helmets shall not be modified in any way. Approved stickers or labels designed for the purpose are acceptable. Damaged helmets shall be discarded and replaced. Under no circumstances should a hard hat be worn over any headwear such as a sun hat, cap, or beanie, unless specifically approved for this purpose. These items present a fire risk, and reduce the effectiveness of the helmet s internal webbing and protective structure that is designed so that the helmet is a snug fit around the wearer s head. Helmets shall only be cleaned with soap and water or mild household detergent. Helmets are required to be worn in the following situations: Page 16 of 65 Endeavour Energy